The effect of repeated freezing-thawing cycle on the structure and operational properties of membrane fabrics is investigated. It is established that the resistance of membrane fabrics to repeated freezingthawing depends on the structure and properties of the membrane coating, temperature, humidity, and the number of cryolysis cycles. The greater the moisture content of the material and the number of cryolysis cycles, the faster the membrane fabrics lose their initial quality indicators. A decrease in temperature and an increase in the number of cryolysis cycles lead to a 6-11% loss of strength during rupture in fabrics with a porous membrane and an 8-19% loss in fabrics with a non-porous membrane, as well as a 20-41% loss in water resistance. Vapor permeability increases by 47-79% in fabrics with a porous membrane and almost by a factor of 3 in fabrics with a non-porous membrane, which indicates structural changes and an increase in the diameter of pores and capillaries of the membranes.
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Translated from Khimicheskie Volokna, No. 1, pp. 55 – 58, January – February, 2020.
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Besshaposhnikova, V.I., Klimova, N.A., Besshaposhnikova, N.V. et al. Influence of Low Temperatures on the Operational Properties of Membrane Fabrics for Clothes. Fibre Chem 52, 59–62 (2020). https://doi.org/10.1007/s10692-020-10151-4
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DOI: https://doi.org/10.1007/s10692-020-10151-4